character: Ms. Lee
topic: Sound Wave Behavior in Different Mediums
grade: 11
subject: Physics
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character: Mr. Smith
topic: Properties of Waves in Solid and Liquid
grade: 11
subject: Physics
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character: Dr. Johnson
topic: Refraction and Reflection of Sound Waves
grade: 11
subject: Physics
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character: Ms. Chen
topic: Applications of Sound Waves in Technology
grade: 11
subject: Physics
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